Insider trading

Period: 12 months Stock: TWST Minimum amount: $100K × Plan: Not on a plan × + Add filter Clear all
Views & alerts

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When

Period

How far back the list reaches. Filings arrive days after the trade, so the newest rows always lag a little.

49 decisions over 12 months
Who

Role

The position the person holds at the company, read from the title on the filing. A chief executive who is also a director counts as the chief executive.

49 decisions over 12 months
The trade

Type of trade

Purchases, sales, or cluster buys: companies where 3 or more insiders bought within 30 days. The number beside each is what that choice would give.

49 decisions over 12 months
The trade

Minimum amount

Hides rows under this value. The amount is the shares traded times the price on the filing.

49 decisions over 12 months Remove this filter
The trade

Plan

  • Discretionary: they chose to sell that week.
  • Scheduled: a 10b5-1 plan fixed the sale months in advance, so the timing says nothing about what they knew.
  • Not stated: filed before the SEC added the box in April 2023, which is most of the older half of this database.
49 decisions over 12 months Remove this filter
The trade

Share of their own holding

How much of what they already held the trade moved. Selling a tenth of a stake is not the same act as selling all of it.

At least
49 decisions over 12 months
Ownership

What the chief executive holds

The value of the chief executive’s stock measured against base salary. The salary comes from the company’s own proxy. Companies with no figure are in neither direction.

49 decisions over 12 months
Stock
Insider
Type ?
Why it stands out
2 Oct 2026
Finn Patrick John President and COO
Sold at will
$4.86M 25,714 at 188.88
12.2%
Not planned
2 Oct 2026
Green Paula SVP of Human Resources
Sold at will
$1.91M 10,088 at 188.88
8.6%
Not planned
2 Oct 2026
Cho Dennis See Remarks
Sold at will
$1.80M 9,514 at 188.88
13.0%
Not planned
2 Oct 2026
Laponis Adam Chief Financial Officer
Sold at will
$1.52M 8,057 at 188.88
7.4%
Not planned
2 Oct 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$279.93K 1,482 at 188.88
3.3%
Not planned
21 Sep 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$279.18K 1,687 at 165.49
0.3%
Not planned
8 Sep 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$282.28K 2,302 at 122.62
0.3%
Not planned
8 Sep 2026
Green Paula SVP of Human Resources
Sold at will
$111.22K 907 at 122.62
0.8%
Not planned
24 Aug 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$120.22K 854 at 140.77
1.9%
Not planned
21 Aug 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$923.26K 6,639 at 139.07
0.8%
Not planned
21 Aug 2026
Finn Patrick John President and COO
Sold at will
$562.66K 4,046 at 139.07
1.9%
Not planned
21 Aug 2026
Laponis Adam Chief Financial Officer
Sold at will
$273.26K 1,965 at 139.07
1.8%
Not planned
21 Aug 2026
Cho Dennis See Remarks
Sold at will
$222.23K 1,598 at 139.07
2.1%
Not planned
21 Aug 2026
Green Paula SVP of Human Resources
Sold at will
$189.13K 1,360 at 139.07
1.1%
Not planned
12 Aug 2026
BLAKE KATRYN Director
Sold at will
$275.25K 2,240 at 122.88
11.5%
Not planned
3 Aug 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$435.22K 5,101 at 85.32
0.6%
Not planned
3 Aug 2026
Finn Patrick John President and COO
Sold at will
$246.41K 2,888 at 85.32
1.1%
Not planned
23 Jul 2026
Finn Patrick John President and COO
Sold at will
$210.13K 2,238 at 93.89
0.8%
Not planned
9 Jul 2026
Laponis Adam Chief Financial Officer
Sold at will
$226.31K 2,399 at 94.33
2.1%
Not planned
22 Jun 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$147.40K 1,688 at 87.32
0.2%
Not planned
15 Jun 2026
Green Paula SVP of Human Resources
Sold at will 2×
$2.13M 26,137 at 81.67
17.8%
Not planned
8 Jun 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$158.20K 2,265 at 69.84
0.3%
Not planned
21 May 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$366.83K 6,888 at 53.26
0.8%
Not planned
21 May 2026
Finn Patrick John President and COO
Sold at will
$221.55K 4,160 at 53.26
1.5%
Not planned
21 May 2026
Laponis Adam Chief Financial Officer
Sold at will
$107.53K 2,019 at 53.26
1.7%
Not planned
12 May 2026
JOHANNESSEN JAN Director
Sold at will
$673.44K 12,000 at 56.12
40.3%
Not planned
8 May 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$282.19K 4,961 at 56.88
9.1%
Not planned
4 May 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$293.00K 5,127 at 57.15
0.6%
Not planned
4 May 2026
Finn Patrick John President and COO
Sold at will
$162.53K 2,844 at 57.15
1.0%
Not planned
4 May 2026
Cho Dennis See Remarks
Sold at will
$112.13K 1,962 at 57.15
1.4%
Not planned
23 Apr 2026
Finn Patrick John President and COO
Sold at will
$141.03K 2,321 at 60.76
0.8%
Not planned
9 Apr 2026
Laponis Adam Chief Financial Officer
Sold at will
$129.56K 2,597 at 49.89
2.0%
Not planned
6 Mar 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$112.49K 2,423 at 46.43
0.3%
Not planned
23 Feb 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$336.54K 7,205 at 46.71
0.8%
Not planned
23 Feb 2026
Finn Patrick John President and COO
Sold at will
$200.57K 4,294 at 46.71
1.5%
Not planned
17 Feb 2026
Green Paula SVP of Human Resources
Sold at will
$2.06M 39,404 at 52.40
23.8%
Not planned
13 Feb 2026
CHESS ROBERT Director
Sold at will
$105.40K 2,184 at 48.26
9.4%
Not planned
6 Feb 2026
JOHANNESSEN JAN Director
Sold at will
$105.39K 2,200 at 47.91
11.0%
Not planned
4 Feb 2026
WERNER ROBERT F. Chief Accounting Officer
Sold at will
$319.54K 7,000 at 45.65
10.6%
Not planned
3 Feb 2026
Leproust Emily M. Chief Executive Officer
Sold at will
$232.93K 5,001 at 46.58
0.6%
Not planned
3 Feb 2026
Finn Patrick John President and COO
Sold at will
$125.99K 2,705 at 46.58
0.9%
Not planned
23 Jan 2026
Finn Patrick John President and COO
Sold at will
$107.33K 2,390 at 44.91
0.8%
Not planned
18 Nov 2025
JOHANNESSEN JAN Director
Sold at will
$174.48K 7,044 at 24.77
32.2%
Not planned
3 Nov 2025
Leproust Emily M. Chief Executive Officer
Sold at will
$156.77K 4,887 at 32.08
0.7%
Not planned
30 Oct 2025
Leproust Emily M. Chief Executive Officer
Sold at will
$986.69K 31,379 at 31.44
4.1%
Not planned
30 Oct 2025
Finn Patrick John President and COO
Sold at will
$553.61K 17,606 at 31.44
6.1%
Not planned
30 Oct 2025
Green Paula SVP of Human Resources
Sold at will
$217.59K 6,920 at 31.44
4.6%
Not planned
30 Oct 2025
Cho Dennis See Remarks
Sold at will
$204.86K 6,515 at 31.44
5.1%
Not planned
30 Oct 2025
Laponis Adam Chief Financial Officer
Sold at will
$173.48K 5,517 at 31.44
4.7%
Not planned
Showing 1–49 of 49.